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Adaptive time-frequency spreading of quasi-orthogonal block codes for MIMO-OFDM systems

Ong, Ju; Jayalath, Anagiyaddage Dhammik; Athaudage, Chandranath R


This paper describes a novel low complexity time-frequency spreading of orthogonal block codes for MIMO-OFDM systems in highly time and frequency selective channels. The space-time codes (STC) and space-frequency codes (SFC) proposed in literature for MIMO-OFDM systems require a quasi-static channel, where the channel is assumed to be constant over a number of OFDM time symbols or OFDM subcarriers. In orthogonal block codes (OBC) this is equal to the number of transmit antennas Nt employed. For...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Conference paper
Source: Tenth IEEE International Conference on Communications Systems
DOI: 10.1109/ICCS.2006.301391


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